I just upgraded my Lion computer to Mountain Lion. I have the Apple RAID card, and when the computer came up on Mountain Lion I received two warnings from the RAID utility, "RAID Disk Failure" and "Drive Module Removed", both with buttons to open the RAID utility itself. However, when I open the RAID utility, the RAID is marked as healthy, there are no log entries indicating a failure, and all the hardware drives are green.
I did have a problem many months ago, but that was fixed. Is the utility re-alerting on old logs, or what? I would hate to think I did have a problem and it was the RAID utility itself mis-reporting good health.
Mac Pro (Mid 2010), Mac OS X (10.7.2), 8-core Xeon, 16G ECC RAM, 0+1 RAID